Games of Cho Chikun in the Oza
| Nr. | Date & Opponent | Event & Result | Mvs |
|---|---|---|---|
| 1 | 1969-03-12 Takeuchi Kiyotaka | 18th Oza, 1st Preliminary (W, W+R) | 160 |
| 2 | 1972-10-25 Iwamoto Kaoru | 20th Oza, Preliminaries (W, B+R) | 175 |
| 3 | 1976-00-00 Hiroe Katsuhiko | 24th Oza, Preliminaries (?, ?) | |
| 4 | 1976-05-27 Fujisawa Hosai | 24th Oza, Round 1 (W, W+4.5) | 230 |
| 5 | 1976-08-19 Takemiya Masaki | 24th Oza, Round 2 (W, W+R) | 184 |
| 6 | 1976-10-07 Rin Kaiho | 24th Oza, Challengers' semi-final (B, B+R) | 135 |
| 7 | 1976-11-04 Kato Masao | 24th Oza, Challengers' final (B, B+R) | 211 |
| 8 | 1976-11-18 Otake Hideo | 24th Oza Final, Game 1 (B, B+R) | 215 |
| 9 | 1976-11-25 Otake Hideo | 24th Oza Final, Game 2 (W, B+R) | 191 |
| 10 | 1976-12-09 Otake Hideo | 24th Oza Final, Game 3 (B, B+4.5) | 248 |
| 11 | 1977-11-09 Kudo Norio | 25th Oza Final, Game 1 (B, W+1.5) | 239 |
| 12 | 1977-11-16 Kudo Norio | 25th Oza Final, Game 2 (W, B+4.5) | 259 |
| 13 | 1978-06-29 Takemiya Masaki | 26th Oza, Round 1 (W, B+R) | 213 |
| 14 | 1979-00-00 Otake Hideo | 27th Oza, Preliminaries (?, ?) | |
| 15 | 1981-05-11 O Rissei | 29th Oza, 3rd Preliminary (W, B+2.5) | 293 |
| 16 | 1982-07-05 Ishida Akira | 30th Oza, Round 1 (B, W+2.5) | 248 |
| 17 | 1983-05-05 Ishida Yoshio | 31st Oza, Round 1 (B, B+6.5) | 247 |
| 18 | 1983-06-16 Ishida Akira | 31st Oza, Round 2 (B, B+2.5) | 255 |
| 19 | 1983-09-12 Rin Kaiho | 31st Oza, Challengers' Semi-final (W, B+R) | 209 |
| 20 | 1984-05-03 Ohira Shuzo | 32nd Oza, Round 1 (B, B+R) | 123 |
| 21 | 1984-05-31 Sanno Hirotaka | 32nd Oza, Round 2 (W, W+4.5) | 255 |
| 22 | 1984-07-26 Takemiya Masaki | 32nd Oza, Semi-final (W, W+R) | 150 |
| 23 | 1984-08-30 Yamashiro Hiroshi | 32nd Oza, Challengers' Final (W, B+6.5) | 257 |
| 24 | 1985-03-07 Takagi Shoichi | 33rd Oza, Round 1 (W, W+R) | 192 |
| 25 | 1985-07-18 Takemiya Masaki | 33rd Oza, Round 2 (W, B+3.5) | 220 |
| 26 | 1986-05-29 O Rissei | 34th Oza, Preliminaries (W, W+3.5) | 281 |
| 27 | 1986-07-10 Rin Kaiho | 34th Oza, Round 2 (B, W+R) | 158 |
| 28 | 1987-05-21 Yamashiro Hiroshi | 35th Oza, Round 1 (W, W+1.5) | 239 |
| 29 | 1987-06-11 Takemiya Masaki | 35th Oza, Preliminaries (B, B+R) | 117 |
| 30 | 1987-07-23 O Rissei | 35th Oza, Semi-final (B, B+R) | 169 |
| 31 | 1987-08-27 Rin Kaiho | 35th Oza, Challengers' Final (B, B+R) | 181 |
| 32 | 1987-09-10 Kato Masao | 35th Oza Final, Game 1 (W, B+R) | 153 |
| 33 | 1987-09-25 Kato Masao | 35th Oza Final, Game 2 (B, W+R) | 134 |
| 34 | 1987-10-15 Kato Masao | 35th Oza Final, Game 3 (W, W+R) | 140 |
| 35 | 1987-11-04 Kato Masao | 35th Oza Final, Game 4 (B, W+R) | 166 |
| 36 | 1988-03-31 Kobayashi Satoru | 36th Oza, Round 1 (W, B+R) | 101 |
| 37 | 1989-07-13 Otake Hideo | 37th Oza, Round 1 (W, W+R) | 136 |
| 38 | 1989-08-17 Honda Kunihisa | 37th Oza, Round 2 (W, W+R) | 94 |
| 39 | 1989-09-14 Hane Yasumasa | 37th Oza, Challengers' semi-final (W, B+R) | 295 |
| 40 | 1990-05-03 Ohira Shuzo | 38th Oza, Round 1 (W, B+R) | 171 |
| 41 | 1991-05-02 Tono Hiroaki | 39th Oza, Round 1 (W, W+13.5) | 257 |
| 42 | 1991-08-01 Hashimoto Shoji | 39th Oza, Round 2 (B, W+1.5) | 236 |
| 43 | 1992-05-21 Otake Hideo | 40th Oza, Round 1 (B, B+3.5) | 287 |
| 44 | 1992-08-13 Hashimoto Shoji | 40th Oza, Round 2 (W, B+R) | 201 |
| 45 | 1993-03-18 Ishida Yoshio | 41st Oza, Round 1 (B, B+R) | 137 |
| 46 | 1993-07-08 O Rissei | 41st Oza, Round 2 (B, B+R) | 237 |
| 47 | 1993-08-26 Kato Masao | 41st Oza, Semi-final (W, B+1.5) | 246 |
| 48 | 1994-04-21 Hashimoto Shoji | 42nd Oza, Round 1 (B, B+2.5) | 221 |
| 49 | 1994-06-23 Takemiya Masaki | 42nd Oza, Round 2 (B, B+1.5) | 256 |
| 50 | 1994-09-01 Rin Kaiho | 42nd Oza, Quarter-final (B, B+10.5) | 223 |
| 51 | 1994-09-15 Yoda Norimoto | 42nd Oza, Semi-final (B, B+R) | 195 |
| 52 | 1994-10-21 Kato Masao | 42nd Oza Final, Game 1 (B, B+R) | 145 |
| 53 | 1994-11-02 Kato Masao | 42nd Oza Final, Game 2 (W, B+R) | 199 |
| 54 | 1994-11-17 Kato Masao | 42nd Oza Final, Game 3 (B, W+R) | 216 |
| 55 | 1994-11-24 Kato Masao | 42nd Oza Final, Game 4 (W, W+4.5) | 244 |
| 56 | 1994-12-08 Kato Masao | 42nd Oza Final, Game 5 (B, B+R) | 197 |
| 57 | 1995-10-19 O Rissei | 43rd Oza Final, Game 1 (B, W+0.5) | 257 |
| 58 | 1995-11-01 O Rissei | 43rd Oza Final, Game 2 (W, B+R) | 141 |
| 59 | 1995-11-16 O Rissei | 43rd Oza Final, Game 3 (B, W+R) | 118 |
| 60 | 1996-06-14 Otake Hideo | 44th Oza, Round 1 (B, W+R) | 160 |
| 61 | 1997-03-27 O Meien | 45th Oza, Round 1 (W, B+R) | 75 |
| 62 | 1998-04-09 Michael Redmond | 46th Oza, Round 1 (B, W+R) | 164 |
| 63 | 1999-04-15 Awaji Shuzo | 47th Oza, Round 1 (W, W+R) | 118 |
| 64 | 1999-05-20 So Yokoku | 47th Oza, Round 2 (B, B+R) | 175 |
| 65 | 1999-07-29 Rin Kaiho | 47th Oza, Round 3 (B, B+4.5) | 219 |
| 66 | 1999-08-26 Kato Masao | 47th Oza, Challengers' Final (B, B+R) | 147 |
| 67 | 1999-10-25 O Rissei | 47th Oza Final, Game 1 (B, B+4.5) | 281 |
| 68 | 1999-11-18 O Rissei | 47th Oza Final, Game 2 (W, B+R) | 161 |
| 69 | 1999-12-02 O Rissei | 47th Oza Final, Game 3 (B, W+R) | 186 |
| 70 | 1999-12-09 O Rissei | 47th Oza Final, Game 4 (W, B+R) | 123 |
| 71 | 2000-03-30 Kono Takashi | 48th Oza, Round 1 (B, B+R) | 195 |
| 72 | 2000-06-08 Hikosaka Naoto | 48th Oza, Round 2 (W, W+0.5) | 244 |
| 73 | 2000-06-29 Kato Masao | 48th Oza, Semi-final (B, B+4.5) | 272 |
| 74 | 2000-08-24 Yoda Norimoto | 48th Oza, Challengers' Final (B, B+R) | 187 |
| 75 | 2000-10-23 O Rissei | 48th Oza Final, Game 1 (W, W+R) | 174 |
| 76 | 2000-11-22 O Rissei | 48th Oza Final, Game 2 (B, W+0.5) | 281 |
| 77 | 2000-11-30 O Rissei | 48th Oza Final, Game 3 (W, B+6.5) | 259 |
| 78 | 2000-12-14 O Rissei | 48th Oza Final, Game 4 (B, W+R) | 208 |
| 79 | 2001-04-26 Yamashiro Hiroshi | 49th Oza, Round 1 (B, B+R) | 153 |
| 80 | 2001-05-24 Komatsu Hideki | 49th Oza, Round 2 (B, B+R) | 235 |
| 81 | 2001-07-05 Yoda Norimoto | 49th Oza, Challengers' Semi-final (B, B+R) | 145 |
| 82 | 2001-08-23 Kato Atsushi | 49th Oza, Challengers' final (W, W+5.5) | 208 |
| 83 | 2001-10-19 O Rissei | 49th Oza Final, Game 1 (B, B+R) | 159 |
| 84 | 2001-11-01 O Rissei | 49th Oza Final, Game 2 (W, W+7.5) | 284 |
| 85 | 2001-11-14 O Rissei | 49th Oza Final, Game 3 (B, B+R) | 147 |
| 86 | 2002-10-10 O Meien | 50th Oza Final, Game 1 (W, W+R) | 228 |
| 87 | 2002-10-31 O Meien | 50th Oza Final, Game 2 (B, W+T) | 144 |
| 88 | 2002-11-21 O Meien | 50th Oza Final, Game 3 (W, B+0.5) | 276 |
| 89 | 2002-11-28 O Meien | 50th Oza Final, Game 4 (B, B+R) | 181 |
| 90 | 2002-12-12 O Meien | 50th Oza Final, Game 5 (B, W+R) | 174 |
| 91 | 2003-04-24 Kudo Norio | 51st Oza League, Round 1 (B, B+3.5) | 213 |
| 92 | 2003-06-26 Yamashiro Hiroshi | 51st Oza League, Round 2 (W, B+2.5) | 294 |
| 93 | 2003-12-25 Kato Atsushi | 52nd Oza, 3rd Preliminary, Round 2 (W, B+1.5) | |
| 94 | 2004-10-21 Mitani Tetsuya | 53rd Oza A Preliminary (?, +) | |
| 95 | 2004-11-04 Tahara Yasufumi | 53rd Oza A Preliminary (?, +) | |
| 96 | 2005-02-17 Ogaki Yusaku | 53rd Oza, Preliminary (W, W+R) | 162 |
| 97 | 2005-05-19 Kataoka Satoshi | 53rd Oza, Round 1 (B, W+4.5) | 200 |
| 98 | 2005-12-01 Kobayashi Satoru | 54th Oza League, Round 1 (W, B+8.5) | 209 |
| 99 | 2007-05-10 So Yokoku | 55th Oza League, Round 1 (B, W+R) | 224 |